Improvement in sash-fasteners



UNITED STATES PATENT OFFICE.

LOUIS L. NORTHUP, OF OLNEYVILLE, RHODE ISLAND.

IMPROVEMENT IN SASH-FASTENERS.

Specification forming part of Letters Patent No. 174,636, dated March14, 1876; application filed February 7, 1876.

To all whom it may concern:

Be it known that I, LoUIs L. N OETHUP, of Olneyville, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful lImprovements in Sash Locks and Supporters, of which thefollowing is a specication The nature oi' my invention consists in anovel combination and arrangement of parts, the case oi' thesash-fastener being so constructed as to enable me to insert itin thesash with less expense of time and labor and mutilation of the sash,than with those ordinarily in use; also, in so constructing the ordinarycam-lever that when the sash is closed it latches into and behind aproperlyconstructed lock-plate fixed in the jamb, and securely locks thesash, and also the construction of the said lock-plate so that it willreceive and engage with the cam-lever, as hereinafter more fullydescribed, and deinitely claimed.

In the accompanying drawings like letters indicate like parts in all theviews.

Figure 1 is a detached View of a case having parallel sides A A andcircular ends B B, with the grooves b b. Fig. 2 is a sectional sideelevation of said case, showing it in its position in the sash, andcarrying the cam-lever C, and spring D; the lockplatc is also shown insection at E. Fig. 3 more fully shows the slot c d, in the lock-plate E,to receive the camlever C. Fig. 4 is a sectional plan view of the sashthrough the line ej'.

The onse A A is cast in one piece, or for convenience in molding and toavoid drilling for the pin of the cam-lever O, it may be made in halveswith sockets for the hubs of the cani-lever O, on each side, and besuitably fastened together. By means of the parallel l sides andcircular ends A A and B B, said case may be inserted in the sash, bysimply boring two holes the proper depth and distance apart, andcleaning out the intermediate chip. The screws at each end in thegrooves b b, by impinging partly on the Wood and partly on the case,prevent the same from working out of its position.

When the sash is at its lowest point, the

spring D, by resting against the bar g, forces the cam end of the leverO into and through the slot c d in the lock-plate E, so that any attemptto raise the sash without lifting directly on the end h of the cam-leverU causes the projections 'i 'i on the cam end to engage with and holdonto the projections c c of the slot c d. In order to unlock and raisethe sash the cam-lever must, by pressure on the end h, be brought intothe position indicated by the broken line in Fig. 2.

I am aware that the use of a cam-lever in combination with a springacting upon it, as a device for supporting Window-sash, is not new, insuch cases the sash being usually locked by the spring engaging directlywith a plate fixed in thejamb but What l claim as my invention, anddesire to secure by Letters Patent, is-

l. In combination, the case A A, h aving parallel sides and circularends, cam-lever C, spring D, and lock-plate E, all substantially asshown and described, for the purposesset forth.

jamb, substantially as shown and described,

for the purpose set forth.

LOUIS L. NORTHUP. i Witnesses:

THOMAS CoEscAnEN, HERBERT L. SAYLEs.

